How to protect Android app against theft and modification of app itself?

Question

There\'s a good report here of a recent scam perpetrated through the Android market.

http://www.theregister.co.uk/2011/12/12/android_market_malware/

Someone

Answer 1

Not the be-all-to-end-all but there is ProGuard:

The ProGuard tool shrinks, optimizes, and obfuscates your code by removing unused code and renaming classes, fields, and methods with semantically obscure names. The result is a smaller sized .apk file that is more difficult to reverse engineer. Because ProGuard makes your application harder to reverse engineer.